<html>
  <head>
    <style>
      body {
        font-family: "Segoe UI", "Lucida Grande", Tahoma, sans-serif;
        font-size: 100%;
      }
    </style>
    <script src="popup.js"></script>
  </head>
  <body>
    <div id="detect_lang">
      <textarea id="text" placeholder="Text to translate" style="padding: 10px; width: 300px;"></textarea>
      <button id="btn-detect">Translate</button>
    </div>
  </body>
</html>